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Demonstration of a Hyperlens-integrated Microscope and Super-resolution Imaging
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Super-Resolution Imaging with Direct Laser Writing-Printed Microstructures.

Bintao Du1, Hao Zhang1, Jun Xia1

  • 1Joint International Research Laboratory of Information Display and Visualization, School of Electronic Science and Engineering, Southeast University, Nanjing 210096, China.

The Journal of Physical Chemistry. A
|August 14, 2020
PubMed
Summary
This summary is machine-generated.

Direct laser writing fabricates complex microstructures for super-resolution microscopy. These structures enable imaging of features as small as 100 nm by creating tailored photonic nanojets (PNJs).

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Area of Science:

  • Optics and Photonics
  • Materials Science
  • Microscopy

Background:

  • Dielectric microstructures enhance conventional optical microscopes for super-resolution imaging.
  • Fabrication limitations often restrict microstructures to natural shapes, leaving complex structures' effects unknown.
  • Super-resolution imaging aims to overcome the diffraction limit of light to achieve higher resolution.

Purpose of the Study:

  • To investigate the super-resolution imaging capabilities of complex microstructures fabricated using direct laser writing (DLW).
  • To explore the influence of different complex microstructure shapes on photonic nanojet (PNJ) formation and imaging performance.
  • To demonstrate the fabrication of various microstructures for achieving nanoscale resolution.

Main Methods:

  • Utilizing direct laser writing (DLW) lithography to fabricate diverse microstructures.
  • Fabricating cylinder, truncated cone, hemisphere, and protruding hemisphere microstructures.
  • Evaluating the super-resolution imaging performance using classical microscopy.

Main Results:

  • Successfully fabricated complex microstructures capable of super-resolution imaging.
  • Achieved resolution of features as small as 100 nm.
  • Demonstrated that different microstructures produce distinct photonic nanojet (PNJ) illuminations and collection efficiencies.
  • Spherical microstructures efficiently collect scattered light and convert evanescent waves.

Conclusions:

  • Direct laser writing (DLW) enables the fabrication of complex microstructures for effective super-resolution imaging.
  • Microstructure geometry critically influences photonic nanojet (PNJ) characteristics and imaging resolution.
  • Complex microstructures offer a versatile platform for advancing nanoscale optical microscopy.